Method of converting an optical communications signal and an optical receiver
US9413572B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Apr 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3845
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of converting an optical communications signal having a differentially encoded multilevel modulation format into communications traffic bits, the multilevel modulation format having a plurality of constellation points, the method comprising: receiving a consecutive pair of symbol signals of said optical communications signal, the pair of symbol signals being arranged to differentially encode a plurality of communications traffic bits; and generating a plurality of optical binary signals in dependence on the symbol signals, each optical binary signal having a respective binary signal level, wherein the optical binary signals form optical versions of the encoded communications traffic bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.